/*
 * @Author: wjc
 * @Date: 2025-09-28 09:02:43
 * @LastEditors: wjc
 * @LastEditTime: 2025-10-28 17:46:43
 * @Description:
 */
import './waves.css'

const context = '@@wavesContext'

function handleClick(el: HTMLElement, binding: DirectiveBinding) {
  function handle(e: MouseEvent) {
    const customOpts = Object.assign({}, binding.value)
    const opts = Object.assign(
      {
        ele: el, // 波纹作用元素
        type: 'hit', // hit 点击位置扩散 center中心点扩展
        color: 'rgba(0, 0, 0, 0.15)', // 波纹颜色
      },
      customOpts
    )

    const target = opts.ele
    if (target) {
      target.style.position = 'relative'
      target.style.overflow = 'hidden'
      const rect = target.getBoundingClientRect()
      let ripple = target.querySelector('.waves-ripple')
      if (ripple) {
        ripple.className = 'waves-ripple'
      } else {
        ripple = document.createElement('span')
        ripple.className = 'waves-ripple'
        ripple.style.height = ripple.style.width = `${Math.max(rect.width, rect.height)}px`
        target.append(ripple)
      }
      switch (opts.type) {
        case 'center': {
          ripple.style.top = `${rect.height / 2 - ripple.offsetHeight / 2}px`
          ripple.style.left = `${rect.width / 2 - ripple.offsetWidth / 2}px`
          break
        }
        default: {
          ripple.style.top = `${
            e.pageY - rect.top - ripple.offsetHeight / 2 - document.documentElement.scrollTop ||
            document.body.scrollTop
          }px`
          ripple.style.left = `${
            e.pageX - rect.left - ripple.offsetWidth / 2 - document.documentElement.scrollLeft ||
            document.body.scrollLeft
          }px`
        }
      }
      ripple.style.backgroundColor = opts.color
      ripple.className = 'waves-ripple z-active'
      return false
    }
  }

  if (el[context]) {
    el[context].removeHandle = handle
  } else {
    el[context] = {
      removeHandle: handle,
    }
  }

  return handle
}

export default {
  mounted(el: HTMLElement, binding: DirectiveBinding) {
    el.addEventListener('click', handleClick(el, binding), false)
  },
  updated(el: HTMLElement, binding: DirectiveBinding) {
    el.removeEventListener('click', el[context]?.removeHandle, false)
    el.addEventListener('click', handleClick(el, binding), false)
  },
  unmounted(el: HTMLElement) {
    el.removeEventListener('click', el[context]?.removeHandle, false)
    el[context] = null
    delete el[context]
  },
}
